God said you shall surely die (Ge 2:17). Maybe you should rethink the whole full preterist thing because God said that they would begin to die, not that they would die immediately. And get this, they were still given the command to fill the earth and take dominion, so we can be sure no extinction is coming.
BTW I don't know why we keep referring to Noah's flood as an extinction event. If God made sure to preserve Noah and his immediate family and a pair of every kind of animal, it is more likened to a great reset. It is only when wicked leaders of our day try to play god and devise a plan of their own great reset that it is counted as a wicket thing. It was only right that God himself determines such a thing, and he even put his bow in the sky as a sign that he would never do it again.
He never said they shall begin to die. He said FOR IN THE DAY
(beyom -197 occurrences in the Old Testament)
that you eat of it you shall surely die.” (Genesis 2:17)
“Most assuredly, I say to you, if anyone keeps my word, he SHALL NEVER SEE death” (John 8:51)
“Jesus said to her, ‘I am the resurrection and the life. He who believes in me, though he may die, HE SHALL LIVE. And whoever lives and believes in me SHALL NEVER DIE. Do you believe this?’” (John 11:25-26)
Death is separation from the Lord. Death is the loss of covenantal relationship. Death is also alienation from His Presence.
"Then the Lord God said, “Behold, the man has become like one of us in knowing good and evil. Now, lest he reach out his hand and take also of the tree of life and eat, and live forever—” therefore the Lord God SENT HIM OUT from the garden of Eden to WORK THE GROUND from which he was taken. HE DROVE OUT THE MAN, and at the east of the garden of Eden he placed the cherubim and a flaming sword that turned every way TO GUARD THE WAY to the tree of life." (Genesis 3:22-24)
The Curse of Adam was alienation and separation from the Father. Jesus experienced the Curse of Adam.
My God, my God, why have you forsaken me? Why are you so far from saving me, so far from my cries of anguish? My God, I cry out by day, but you do not answer, by night, but I find no rest. (Psalm 22:1-2)
Christ has redeemed us from the curse of the law, having become a curse for us (for it is written, “Cursed is everyone who hangs on a tree”), (Galatians 3:13)
Christ was the first to be raised from the dead, the first to be raised from the death of Adam (1 Corinthians 15:19f).
But Christ was not the first to be raised from physical death (many people were raised from physical death prior to Jesus’ resurrection).
Therefore, the death of Adam, from which Christ was the first to be raised, was not physical death.
Jesus was the first to be raised from the death of Adam (1 Corinthians 15)—the first to come “out from among” the dead.
Jesus was not the first to be raised from physical death.
Thus, the resurrection of 1 Corinthians 15, the resurrection from the death of Adam, is not physical resurrection.
Paul says Christ was the first to be raised “out from the dead,” (the death of Adam),
Christ was not the first to be raised from physical death,
Therefore, it must be true that the death of Adam was not physical death.
And, It must be true that Christ was the first to be raised out of spiritual death.
